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BiologyInhabits clear seaward reefs of oceanic islands to a depth over 25 m (Ref. 9710). Common on reef walls and steep slopes with holes (Ref. 30404). Inhabits porous coral rock which it shares with swarms of anthiases (Ref. 37816). Territorial and will bite when provoked (Ref. 30404). Minimum depth reported taken from Ref. 9710.